What is a voltage issue?

If you have arrived to a voltage issue where your airhandler and condenser are not running while set to cool, you could have a high voltage or low voltage problem. Some examples of high voltage problems would be a bad breaker, burned high voltage wire, or bad control board. Some examples of low voltage problems would be a bad thermostat, broken thermostat wire, blown low voltage fuse, bad low voltage transformer, or bad control board. A service technician is going to be needed to come out and troubleshoot your problem.